Sooo good! At first I felt like to much information was being thrown at me. But as I got further into the book it all started making sense. The world building was great. I liked that Sage getting her memories back didn't happen all at once and she was able to develop relationships with people at a slower pace. I thought I had it figured out where the story was going, but I liked how the world's mirrored each other in ways. And I just love Gavin. I'm excited to read the next book.